Application of an index derived from the area under a neutrophil curve as a predictor of surgical site infection after spinal surgery

Table 2 Comparison of I-index and lymphocyte count and percentage between groups

	SSI group	Non-SSI group	p
I-index-7 (SD)	47.8 (28.1)	25.4 (14.4)	0.002*
I-index-14 (SD)	71.4 (44.2)	32.6 (23.1)	0.001*
c-I-index (SD)	113.6 (92.7)	32.6 (23.1)	< 0.0001*
Lymphocyte count at 3–4 days postoperatively (SD)	1070 (328)	1248 (428)	0.10
Lymphocyte percentage at 3–4 days postoperatively (SD)	15.2 (5.7)	18.7 (7.8)	0.16
Lymphocyte count at 6–7 days postoperatively (SD)	1078 (384)	1396 (482)	0.01*
Lymphocyte percentage at 6–7 days postoperatively (SD)	17.2 (7.6)	25.0 (7.4)	0.001*

Values are presented as mean ± standard deviation
*Statistically significant (p < 0.05). SSI surgical site infection, SD standard deviation

ISSN: 1471-2482